This plugin hasnt been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Async Social Sharing

Description

Simple social sharing plugin that loads the third-party scripts asynchronously
and after the page loads to improve site performance.

The plugin provides settings to load any of the following sharing widgets:

Twitter

Facebook

Google+

Linkedin

Hacker News

Available display options include ability to display the sharing widgets on
above or below content on pages, specific custom post types or blog and archive pages.

Why is Asynchronous script loading better?
Asynchronous loading allows multiple files to load parallel to each other.
Instead of having to wait for Twitter to respond with their script, the browser
moves on and starts fetching the next request.